A method for adjusting line and slope of shield tunnel

Abstract

The present application discloses a method for adjusting the line and slope of a shield tunnel, which relates to the field of tunnel engineering technology, including: obtaining the coordinates of the first shield center point and the second shield center point to calculate the arc value between the first shield center point and the second shield center point; obtaining the actual offset between the tunnel center line and the line center line and the limit allowable error value of the plane, and calculating the plane envelope according to the actual offset, the limit allowable error value, the coordinates of the first shield center point and the arc value; obtaining the section mileage value of the longitudinal section, the actual top measuring point elevation, the actual bottom measuring point elevation, the minimum allowable height of the contact network installation and the minimum allowable height of the track structure, and calculating the longitudinal section envelope accordingly; adjusting the line and slope of the shield tunnel based on the plane envelope and the longitudinal section envelope. The present application improves the efficiency of line and slope adjustment by calculating and generating the line plane and the longitudinal section envelope in the CAD drawing, and assisting the line and slope adjustment work with visual graphics.

Description

Technical Field

[0001] The present application relates to the technical field of tunnel engineering, and in particular to a method for adjusting the line and slope of a shield tunnel. Background Art

[0002] As the design of shield sections of urban rail transit becomes more and more sophisticated, especially the use of special vibration reduction measures when crossing environmentally sensitive areas, the amount of line adjustment and slope adjustment data is large and the redundancy is low. At the same time, considering that the track laying period seriously restricts the opening time of the entire line, the line adjustment and slope adjustment work faces the pressure of tight time and heavy tasks. In addition, due to the cubic parabola characteristics of the line transition curve, the calculation and direction judgment of the curve offset value are relatively complicated, and the horizontal and vertical sections are greatly affected by the broken chain. Therefore, it is difficult to convert the measured data into graphic data during the line adjustment and slope adjustment process. On-site designers may lack experience in line adjustment and slope adjustment. Therefore, the visualization of the existing line adjustment and slope adjustment methods is poor, and the adjustment plan often fails to meet the needs of on-site track laying and contact network installation.

[0003] In the existing method, the plane mainly checks the deviation between the measured shield centerline and the designed line centerline, which can only reflect where the deviation is, whether it is to the left or to the right, but it is not clear which sections of the deviation meet the requirements and which sections of the deviation exceed the limit. For the curved part, the deviation between the center of the shield and the center of the line must be analyzed separately. The longitudinal section mainly checks the deviation between the actual shield back-calculated track surface line and the designed track surface line. It also has the same problem as the plane. It is impossible to judge which sections of the deviation meet the requirements and which exceed the limit. Moreover, rail transit is a linear project, which is restricted by the minimum slope length and the minimum curve radius. After the line is adjusted, if the original over-limit section is satisfied, other sections may exceed the limit again. Therefore, the adjustment plan needs to be verified many times, the work efficiency is low, and it cannot meet the requirements of quickly and accurately delivering the results of line adjustment and slope adjustment under the tight track laying schedule, which seriously affects the track laying progress on site. Summary of the invention

[0004] The present application provides a shield tunnel alignment and slope adjustment method, which aims to solve the problems in the prior art of difficulty in converting measurement data into visual data and low efficiency of alignment and slope adjustment.

[0005] To achieve the above objectives, this application adopts the following technical solutions:

[0006] The present invention discloses a shield tunnel alignment and slope adjustment method, including calculating a plane envelope and a longitudinal section envelope:

[0007] Obtaining the coordinates of a first shield center point and the coordinates of a second shield center point adjacent to the first shield center point, so as to calculate the arc value between the first shield center point and the second shield center point;

[0008] Obtaining an actual offset between the tunnel centerline and the line centerline and a plane limit allowable error value, and calculating a plane envelope according to the actual offset, the limit allowable error value, the coordinates of the first shield center point and the arc value;

[0009] Obtain the section mileage value of the longitudinal section, the actual top measuring point elevation, the actual bottom measuring point elevation, the minimum allowable height of the overhead line installation and the minimum allowable height of the track structure, and calculate the longitudinal section envelope line based on these values;

[0010] The shield tunnel is adjusted in line and slope based on the plane envelope and the longitudinal section envelope.

[0011] Preferably, the calculating the arc value between the first shield center point and the second shield center point includes:

[0012] Calculate the actual angle between the first shield center point and the second shield center point according to the coordinates of the first shield center point and the coordinates of the second shield center point;

[0013] The azimuth angle between the first shield center point and the second shield center point is calculated according to the actual angle, and the azimuth angle is converted into a corresponding radian value.

[0014] Preferably, the obtaining of the actual offset between the tunnel centerline and the line centerline and the limit allowable error value of the plane, and calculating the plane envelope according to the actual offset, the limit allowable error value, the coordinates of the first shield center point and the arc value, comprises:

[0015] Obtaining a designed offset between the tunnel centerline and the line centerline, and calculating an actual offset between the tunnel centerline and the line centerline according to the designed offset and the position of the first shield center point in the shield tunnel;

[0016] The limit allowable error value of the plane is obtained, and the envelope discrete point coordinates of the allowable limit error on the left and right sides of the first shield center point are calculated according to the limit allowable error value, the arc value, the actual offset and the coordinates of the first shield center point.

[0017] Preferably, the position of the first shield center point in the shield tunnel includes a straight line, a circular curve, a front gentle curve or a rear gentle curve.

[0018] Preferably, the calculating of the longitudinal section enveloping line based on the above comprises:

[0019] The discrete point coordinates of the envelope of the allowable limit error of the top of the center point of the first shield are calculated according to the section mileage value of the longitudinal section, the actual top measuring point elevation and the minimum allowable height of the contact network installation.

[0020] Preferably, the calculating of the longitudinal section enveloping line according to the above method further comprises:

[0021] The coordinates of the envelope discrete points of the allowable limit error at the bottom of the center point of the first shield are calculated according to the section mileage value of the longitudinal section, the actual bottom measuring point elevation and the allowable minimum height of the track structure.

[0022] Preferably, the first shield center point and the second shield center point are located in different planes of the shield tunnel.

[0023] A shield tunnel alignment and slope adjustment device, comprising:

[0024] A first calculation module, used to obtain the coordinates of a first shield center point and the coordinates of a second shield center point adjacent to the first shield center point, so as to calculate the arc value between the first shield center point and the second shield center point;

[0025] A second calculation module is used to obtain the actual offset between the tunnel centerline and the line centerline and the limit allowable error value of the plane, and calculate the plane envelope according to the actual offset, the limit allowable error value, the coordinates of the first shield center point and the arc value;

[0026] The third calculation module is used to obtain the section mileage value of the longitudinal section, the actual top measuring point elevation, the actual bottom measuring point elevation, the minimum allowable height of the overhead line installation and the minimum allowable height of the track structure, and calculate the longitudinal section envelope line based on the obtained values;

[0027] The adjustment module is used to adjust the line and slope of the shield tunnel based on the plane envelope and the longitudinal section envelope.

[0028] An electronic device comprises a memory and a processor, wherein the memory is used to store one or more computer instructions, wherein the one or more computer instructions are executed by the processor to implement a shield tunnel alignment and slope adjustment method as described in any one of the above.

[0029] A computer-readable storage medium storing a computer program, wherein the computer program enables a computer to implement a shield tunnel alignment and slope adjustment method as described in any one of the above when executed.

[0030] The present invention has the following beneficial effects:

[0031] This application innovatively proposes a method for calculating the envelope line of line adjustment and slope adjustment. By calculating and generating the line plane and longitudinal section envelope lines in the CAD drawing, the over-limit section can be seen intuitively and vividly, and the line adjustment and slope adjustment work can be guided by visual graphics, which greatly improves work efficiency, reduces the number of trial calculations for line adjustment and slope adjustment, and minimizes workload. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0033] Figure 1 This is a flow chart of a method for adjusting the line and slope of a shield tunnel implemented in this application;

[0034] Figure 2 This is a schematic diagram of the calculation of the flat cross-section envelope of this application;

[0035] Figure 3 It is the position relationship diagram of the design center line and the limit envelope line at the measuring points 1-3 of this application;

[0036] Figure 4 This is the position relationship diagram of the design center line and the limit envelope line at the measuring points 1-3 after the adjustment of this application;

[0037] Figure 5 It is the position relationship diagram of the designed rail surface line and the limit envelope line at the measuring points 1-4 of this application;

[0038] Figure 6 This is the position relationship diagram between the designed track surface line and the limit envelope line at measuring points 1-4 after adjustment in this application. DETAILED DESCRIPTION

[0039] The following will be combined with the accompanying drawings to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0040] The terms "first", "second", etc. in the claims and specification of the present application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way are interchangeable under appropriate circumstances. This is merely a way of distinguishing objects with the same properties in the embodiments of the present application. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, so that a process, method, system, product or apparatus that includes a series of units is not necessarily limited to those units, but may include other units not expressly listed or inherent to these processes, methods, products or apparatus.

[0041] like Figure 1As shown in FIG. 1 , a shield tunnel alignment and slope adjustment method includes calculating the plane envelope and the longitudinal section envelope:

[0042] S110, obtaining the coordinates of a first shield center point and the coordinates of a second shield center point adjacent to the first shield center point, so as to calculate the arc value between the first shield center point and the second shield center point;

[0043] S120, obtaining an actual offset between the tunnel centerline and the line centerline and a limit allowable error value of the plane, and calculating a plane envelope according to the actual offset, the limit allowable error value, the coordinates of the first shield center point and the arc value;

[0044] S130, obtaining the section mileage value of the longitudinal section, the actual top measuring point elevation, the actual bottom measuring point elevation, the minimum allowable height of the overhead line installation, and the minimum allowable height of the track structure, and calculating the longitudinal section envelope line based on the above;

[0045] S140, adjusting the line and slope of the shield tunnel based on the plane envelope and the longitudinal section envelope.

[0046] The design of line adjustment and slope adjustment for urban rail transit is mainly a remedial measure to correct construction errors according to measured section data during or after the construction of civil engineering (stations, sections). During the construction of urban rail transit, due to internal and external factors, the center line of the line plane or the rail top elevation line of the longitudinal section will have a significant offset error, causing the equipment systems of the station or section to seriously intrude into the limit, posing a serious safety hazard to the later operation. In order to reduce the impact of the error, the line plane, longitudinal section, track, equipment system space occupied, etc. are adjusted to reduce the construction error to meet the limit requirements, thereby ensuring the operational safety of the rail transit after completion.

[0047] The line adjustment and slope adjustment method proposed in this application is to generate a visual ground plane and longitudinal section envelope in the figure so as to intuitively and vividly see the over-limit section, thereby realizing line adjustment and slope adjustment.

[0048] This method actually includes the calculation method of plane envelope and longitudinal section envelope. Before calculation, it is necessary to obtain the original construction drawing design line plane and longitudinal section, track structure form, contact network design form, track design superelevation and limit diagram and other information.

[0049] 1. Plane envelope calculation method:

[0050] like Figure 2As shown in the figure, in the plane, according to the basic data such as the tunnel centerline measured by section, tunnel section size, limit value of the limit error circle, curve superelevation, offset between the tunnel centerline and the line centerline, etc., the strip envelope on both sides of the line centerline can be generated in the line plan using plane analytic geometry and related formulas.

[0051] Furthermore, a design offset between the tunnel centerline and the line centerline is obtained, and an actual offset between the tunnel centerline and the line centerline is calculated based on the design offset and the position of the first shield center point in the shield tunnel.

[0052] The position of the first shield center point in the shield tunnel includes a straight line, a circular curve, a front gentle curve or a rear gentle curve.

[0053] According to a certain mileage section in the plane, the coordinates of the tunnel center, i.e., the center point of the first shield (X1, Y1), are measured, and the design offset D between the tunnel centerline and the line centerline is obtained.

[0054] Then, the actual offset is calculated based on the designed offset between the center line of the tunnel and the center line of the line. However, the trajectory of shield tunneling does not advance along a straight line but in a curved shape, and such a curve is composed of several curve segments, and a curve segment can be composed of a straight line, a transition curve and a circular curve. In this way, there are three situations for the trajectory of shield tunneling, that is, the measuring point is on a straight line segment (the center point of the shield also refers to the measuring point in this application), or on a circular curve, or on a transition curve, where the transition curve can be divided into the front transition curve and the rear transition curve. Therefore, the actual offset between the center line of the tunnel and the center line of the line will change according to the position of the center point of the shield on the shield tunnel, and the left deviation of the shield tunneling direction is negative, and the right deviation is positive, specifically:

[0055] When the center point of the first shield is on the straight line, the actual offset between the tunnel centerline and the line centerline is D = 0;

[0056] When the center point of the first shield is on the circular curve, the actual offset D between the tunnel centerline and the line centerline 实测 = Design offset D between tunnel centerline and line centerline 设计 ;

[0057] When the center point of the first shield is on the front gentle curve, D 实测 =(measurement point mileage-straight slow point mileage)*D 设计 / L Total length of front buffer;

[0058] When the center point of the first shield is on the back slow curve, D 实测 =(slow straight point mileage-measurement point mileage)*D 设计 / L after slowing down the entire length.

[0059] Furthermore, the actual angle between the first shield center point and the second shield center point is calculated according to the coordinates of the first shield center point and the coordinates of the second shield center point.

[0060] Wherein, the first shield center point and the second shield center point are located in different planes of the shield tunnel.

[0061] Obtain the coordinates (X2, Y2) of the second shield center point adjacent to the first shield center point, wherein the shield tunnel plane where the first shield center point is located is adjacent to the shield tunnel plane where the second shield center point is located, and calculate the actual angle α″1 between the first shield center point and the second shield center point according to α″1=arctan((Y2-Y1) / (X2-X1)).

[0062] Furthermore, the azimuth angle between the first shield center point and the second shield center point is calculated according to the actual angle, and the azimuth angle is converted into a corresponding radian value.

[0063] Assume that the azimuth angle between the center point of the first shield and the center point of the second shield is α′1, then

[0064] When α″1>0, Y2-Y1>0, X2-X1>0, α′1=α″1;

[0065] When α″1>0, Y2-Y1<0, X2-X1<0, α′1=α″1+180;

[0066] When α″1<0, Y2-Y1>0, X2-X1<0, α′1=α″1+180;

[0067] When α″1<0, Y2-Y1<0, and X2-X1>0, α′1=α″1+360.

[0068] The obtained azimuth angle α′1 is then converted into a radian value α1 according to α1=α′1*π / 180.

[0069] Furthermore, the limit allowable error value of the plane is obtained, and the envelope discrete point coordinates of the allowable limit error on the left and right sides of the first shield center point are calculated based on the limit allowable error value, the arc value, the actual offset and the coordinates of the first shield center point.

[0070] Get the limit allowable error value R, and assume that the left envelope coordinate point in the shield tunneling direction is (X′1, Y′1), then X′1=X1-(RD)*sinα1; Y′1=Y1+(RD)*cosα1;

[0071] Assume that the envelope coordinate point on the right side of the shield tunneling direction is (X1″, Y1″), then X1″=X1+(R+D)*sinα1, Y1″=Y1-(R+D)*cosα1;

[0072] According to this process, the coordinates of the discrete points of the envelope of the allowable limit error of any measured shield center point on the left and right sides of the plane can be calculated, and then the coordinates of all the discrete points in the entire interval can be plotted in the CAD line plan using polyline segments to form two strip limit envelopes, i.e., plane envelopes, to determine whether the line plane needs to be adjusted, thereby achieving the goal of visualizing line and slope adjustment.

[0073] If the designed line centerline is outside the plane envelope, it means that if the actual shield tunnel is laid according to the original design plan, there will be limit intrusion problems, and the line plane needs to be adjusted before track laying. Only when the line plane is adjusted to within the envelope can the plane limit requirements be met.

[0074] 2. Calculation method of longitudinal section envelope line:

[0075] Get the mileage value L(m) of any longitudinal section and the elevation H of the top point of the section 顶 , Measure the bottom point elevation H 底 , Minimum allowable height H for overhead line installation 触 and the minimum permissible height H of the track structure 轨 , the coordinates of discrete points on the upper and lower limit envelopes of any longitudinal section can be calculated.

[0076] Furthermore, the coordinates of the envelope discrete points of the allowable limit error of the top of the center point of the first shield are calculated according to the section mileage value of the longitudinal section, the actual top measuring point elevation and the minimum allowable height of the contact network installation.

[0077] Assume the coordinate point of the upper envelope is (X′ z1 , Y′ z1 ), then X′ z1 =L1*longitudinal section transverse scale coefficient, *Vertical scale coefficient of longitudinal section.

[0078] Furthermore, the coordinates of the discrete points of the envelope of the allowable limit error at the bottom of the center point of the first shield are calculated according to the section mileage value of the longitudinal section, the actual bottom measuring point elevation and the allowable minimum height of the track structure.

[0079] Set the envelope coordinate point to (X″ z , Y″ z1 ), then X″ z1 =L1*longitudinal section transverse ratio * Vertical scale factor of longitudinal section;

[0080] Among them, the longitudinal section horizontal scale coefficient and the longitudinal section vertical scale coefficient are both fixed values ​​given in advance.

[0081] According to this process, the coordinates of the discrete points of the envelope of the allowable limit errors at the top and bottom of any measured shield center point can be calculated. Finally, the coordinates of all discrete points in the entire interval are plotted in the CAD line longitudinal section using PL lines to form two strip limit envelopes, namely the longitudinal section envelope lines, to determine whether the line longitudinal section needs to be adjusted. If adjustment is required, the line longitudinal section is adjusted to within the envelope to meet the height requirements for the later installation of the track and contact network.

[0082] The present application creatively proposes a method for calculating the envelope line of line adjustment and slope adjustment. By calculating and generating the line plane and longitudinal section envelope lines in the figure, the over-limit section can be seen intuitively and vividly, and the line adjustment and slope adjustment plan can be assisted and guided by visual graphics, thereby greatly improving work efficiency, reducing the number of trial calculations for line adjustment and slope adjustment, and minimizing the workload. At the same time, the envelope line calculation method lays a theoretical foundation for the subsequent compilation of visual auxiliary software.

[0083] Based on the above-mentioned line adjustment and slope adjustment method, the present application also provides a line adjustment and slope adjustment device for a shield tunnel, comprising:

[0084] A first calculation module, used to obtain the coordinates of a first shield center point and the coordinates of a second shield center point adjacent to the first shield center point, so as to calculate the arc value between the first shield center point and the second shield center point;

[0085] A second calculation module is used to obtain the actual offset between the tunnel centerline and the line centerline and the limit allowable error value of the plane, and calculate the plane envelope according to the actual offset, the limit allowable error value, the coordinates of the first shield center point and the arc value;

[0086] The third calculation module is used to obtain the section mileage value of the longitudinal section, the actual top measuring point elevation, the actual bottom measuring point elevation, the minimum allowable height of the overhead line installation and the minimum allowable height of the track structure, and calculate the longitudinal section envelope line based on the obtained values;

[0087] The adjustment module is used to adjust the line and slope of the shield tunnel based on the plane envelope and the longitudinal section envelope.

[0088] Applying the device to implement the above-mentioned line adjustment and slope adjustment method can reduce the workload of personnel involved in line adjustment and slope adjustment and improve their work efficiency.

[0089] The following is an example of a practical application of a project to illustrate this application:

[0090] Table 1 shows the pre-track-laying penetration measurement data of a shield section of a certain project. The section is DK29+854~DK29+868. In this section, the maximum offset of the centerline of the plane tunnel is 0.163m (greater than the limit allowable value of 0.15m), and the minimum height of the longitudinal section track structure is 0.667m (less than the minimum allowable height of the track structure of 0.82m). Therefore, it is necessary to adjust the line and slope of this section. Among them, DK29+854 refers to 29854.111 at the detection section mileage in Table 1, which specifically refers to the track mileage of 29.854111km. 29Km+854.111m is the distance from the starting point of the route to this point. For the convenience of expression, the interval is only accurate to m.

[0091] Table 1 Pre-track-laying penetration measurement data of a certain project shield section

[0092]

[0093] 1) Plane adjustment

[0094] The coordinates of the four measured shield center points are (x1, y1), (x2, y2), (x3, y3) and (x4, y4).

[0095] (1) Calculate the actual angle α″ between adjacent shield center points

[0096] α″1=arctan((y2-y1) / (x2-x1))=arctan((103387.0253-103385.5227) / (77859.2645-77854.7229))=18.306;

[0097] α″2=arctan((y3-y2) / (x3-x2))=arctan((103388.6038-103387.0253) / (77863.8339-77859.2645))=19.058;

[0098] α″3=arctan((y4-y3) / (x4-x3))=arctan((103390.2440-103388.6038) / (77868.3219-77863.8339))=20.075.

[0099] (2) Calculate the azimuth angle α′ between adjacent shield center points

[0100] Because α″1>0, and y2-y1>0, x2-x1>0, so α′1=α″1=18.306;

[0101] Because α″2>0, and y3-y2>0, x3-x2>0, so α′2=α″2=19.058;

[0102] Because α″3>0, and y4-y3>0, x4-x3>0, therefore α′3=α″3=20.075.

[0103] (3) Calculate the arc value α between adjacent shield center points

[0104] α1=α′1*π / 180=0.32; α2=α2′*π / 180=0.333; α3=α′3*π / 180=0.35.

[0105] (4) Calculate the actual offset between the tunnel centerline and the line centerline

[0106] From the design values ​​of the tunnel centerline offset in Table 1, it can be seen that measuring points 1-4 are all located on the circular curve, so D 实测 =D 设计 =0.148m.

[0107] Here, it should be noted that only when the center point of the shield is located on the circular curve, the design offset of the center line of the interval tunnel will be a fixed value other than 0.

[0108] (5) Calculate the envelope coordinates (X 左 , Y 左 )、(X 右 , Y 右 )

[0109]

[0110] Calculate in sequence:

[0111]

[0112] Only when the coordinates of two shield center points are known can the coordinate points of the limit envelope on the left and right sides corresponding to one shield center point be obtained. Therefore, through the above calculation, the coordinates of the envelope discrete points of the allowable limit error on the left and right sides of the measured shield center point 1-3 can be obtained. The limit envelope is obtained by connecting the points and compared with the design center line, such as Figure 3 shown.

[0113] Depend on Figure 3 It can be seen intuitively that the design center point corresponding to measuring point 3 is outside the limit envelope and needs to be adjusted.

[0114] By adjusting the radius of the radius curve and the coordinates of the intersection point, the plane line outside the limit envelope is adjusted to within the envelope to ensure that the line meets the limit requirements. After adjustment, the relationship between the design center line and the limit envelope is as follows: Figure 4 shown.

[0115] Table 2 is a comparison table of tunnel centerline offset before and after adjustment, as follows:

[0116] Table 2 Comparison of tunnel centerline offset before and after adjustment

[0117]

[0118] It can be seen from Table 2 that the errors of the offsets after adjustment are all less than the limit allowable value of 0.15m. At this point, the line adjustment work is completed.

[0119] 2) Longitudinal section adjustment

[0120] Table 3 is the elevation table of the tunnel top and bottom measuring points at measuring points 1-4 and the height values ​​of the upper and lower structures on the track surface, as follows:

[0121] Table 3 Elevations of the top and bottom measuring points of the tunnel at measuring points 1-4 and the height values ​​of the upper and lower structures on the track surface

[0122]

[0123] This section of line is located in the range of medium vibration-damping ballast bed. The minimum allowable track structure height is 0.820m, the overhead contact network installation height is 4.460m, the transverse scale coefficient of the longitudinal section is 0.5, and the vertical scale coefficient of the longitudinal section is 2.

[0124] (1) Draw the upper envelope

[0125] X′ z1 =L1*longitudinal section transverse scale coefficient=29854.111*0.5=14927.0557;

[0126]

[0127] Calculated in sequence:

[0128] (X′ z2 , Y′ z2 ) = (14929.460, -26.281);

[0129] (X′ z3 , Y′ z3 ) = (14931.859, -26.481);

[0130] (X′ z4 , Y′ z4 )=(14934.249,-26.546).

[0131] (2) Draw the lower envelope

[0132] X″z1 =L1*longitudinal section transverse scale coefficient=29854.111*0.5=14927.0557;

[0133]

[0134] Calculated in sequence:

[0135] (X″ z2 , Y″ z2 )=(14929.460,-26.721);

[0136] (X″ z3 , y″ z3 ) = (14931.859, -26.921);

[0137] (X″ z4 , Y″ z4 )=(14934.249,-26.986).

[0138] Through the above calculation, the discrete point coordinates of the envelope of the allowable limit error on both sides of the upper and lower sides of the measured shield center point 1-4 are obtained. The top and bottom limit envelopes are obtained by connecting the points and compared with the designed track surface line, such as Figure 5 shown.

[0139] pass Figure 5 It can be seen intuitively that the designed track surface lines at measuring points 1-4 are outside the envelope of the allowable limit errors on both sides of the measured shield center point, which does not meet the requirements and needs to be adjusted.

[0140] By adjusting the radius of the radius curve and the coordinates of the intersection, the plane line outside the limit envelope is adjusted to within the envelope to ensure that the line meets the limit requirements. The relationship between the designed track surface line and the limit envelope after adjustment is as follows: Figure 6 shown.

[0141] Table 4 is a comparison table of the upper and lower structure heights of the tunnel track surface before and after adjustment, as follows:

[0142] Table 4 Comparison of the upper and lower structure heights of the tunnel track surface before and after adjustment

[0143]

[0144] It can be seen from the adjusted tunnel track surface height that the height above the track surface meets the minimum installation height of the overhead contact network of 4.46m, and the height below the track surface meets the minimum allowable height of the track structure of 0.82m. At this point, the slope adjustment work is completed.

[0145] Compared with the traditional line adjustment and slope adjustment methods, which require constant trial calculation, fitting, and recalculation, a lot of time is spent on calculation and inspection, the design visualization is low, the efficiency is low, and it is unable to meet the requirements of fast and accurate delivery of line adjustment and slope adjustment results under the tight track laying schedule. The beneficial effects of this application are innovative methods and data visualization. In the line adjustment and slope adjustment stages of urban rail transit and railways, the over-limit sections can be seen intuitively and vividly, and the visual graphics can assist in guiding the line adjustment and slope adjustment plans, greatly improving work efficiency, reducing the number of trial calculations for line adjustment and slope adjustment, and minimizing workload.

[0146] An electronic device includes a memory and a processor, wherein the memory is used to store one or more computer instructions, wherein the one or more computer instructions are executed by the processor to implement the above-mentioned method for adjusting the line and slope of a shield tunnel.

[0147] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the electronic device described above can refer to the corresponding process in the aforementioned method embodiment, and will not be repeated here.

[0148] A computer-readable storage medium storing a computer program, wherein the computer program enables a computer to implement the above-mentioned method for adjusting the line and slope of a shield tunnel when executed.

[0149] Exemplarily, a computer program may be divided into one or more modules / units, one or more modules / units are stored in a memory and executed by a processor, and the I / O interface transmission of data is completed by an input interface and an output interface to complete the present invention. One or more modules / units may be a series of computer program instruction segments that can complete specific functions, and the instruction segments are used to describe the execution process of the computer program in a computer device.

[0150] The computer device may be a computing device such as a desktop computer, a notebook, a PDA, a cloud server, etc. The computer device may include, but is not limited to, a memory and a processor. Those skilled in the art may understand that this embodiment is only an example of a computer device and does not constitute a limitation on the computer device. The computer device may include more or fewer components, or a combination of certain components, or different components. For example, the computer device may also include an input device, a network access device, a bus, etc.

[0151] The processor may be a central processing unit (CPU), other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or any conventional processor, etc.

[0152] The memory can be an internal storage unit of a computer device, such as a hard disk or memory of a computer device. The memory can also be an external storage device of a computer device, such as a plug-in hard disk equipped on a computer device, a smart media card (SMC), a secure digital (SD) card, a flash card, etc. Furthermore, the memory can also include both an internal storage unit of a computer device and an external storage device. The memory is used to store computer programs and other programs and data required by the computer device. The memory can also be used to temporarily store data in an output device. The aforementioned storage media include various media that can store program codes, such as USB flash drives, mobile hard disks, read-only memories ROM, random access memories RAM, disks or optical disks.

[0153] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A method for adjusting the line and slope of a shield tunnel, characterized in that: Including calculation of plane envelope and longitudinal section envelope: Obtaining the coordinates of a first shield center point and the coordinates of a second shield center point adjacent to the first shield center point, so as to calculate the arc value between the first shield center point and the second shield center point; Obtaining an actual offset between the tunnel centerline and the line centerline and a plane limit allowable error value, and calculating a plane envelope according to the actual offset, the limit allowable error value, the coordinates of the first shield center point and the arc value; Obtain the section mileage value of the longitudinal section, the actual top measuring point elevation, the actual bottom measuring point elevation, the minimum allowable height of the overhead line installation and the minimum allowable height of the track structure, and calculate the longitudinal section envelope line based on these values; Adjusting the line and slope of the shield tunnel based on the plane envelope and the longitudinal section envelope; The step of obtaining the actual offset between the tunnel centerline and the line centerline and the limit allowable error value of the plane, and calculating the plane envelope according to the actual offset, the limit allowable error value, the coordinates of the first shield center point and the arc value includes: Obtaining a designed offset between the tunnel centerline and the line centerline, and calculating an actual offset between the tunnel centerline and the line centerline according to the designed offset and the position of the first shield center point in the shield tunnel; Obtaining the limit allowable error value of the plane, and calculating the envelope discrete point coordinates of the allowable limit error on the left and right sides of the center point of the first shield according to the limit allowable error value, the arc value, the actual offset, and the coordinates of the center point of the first shield; The calculation of the longitudinal section envelope line based on this includes: Calculate the envelope discrete point coordinates of the allowable limit error of the top of the center point of the first shield according to the section mileage value of the longitudinal section, the actual top measurement point elevation and the minimum allowable height of the overhead line installation; The calculation of the longitudinal section envelope line based on the above mentioned method further includes: The coordinates of the envelope discrete points of the allowable limit error at the bottom of the center point of the first shield are calculated according to the section mileage value of the longitudinal section, the actual bottom measuring point elevation and the allowable minimum height of the track structure.

2. A shield tunnel alignment and slope adjustment method according to claim 1, characterized in that: The calculating the arc value between the first shield center point and the second shield center point includes: Calculate the actual angle between the first shield center point and the second shield center point according to the coordinates of the first shield center point and the coordinates of the second shield center point; The azimuth angle between the first shield center point and the second shield center point is calculated according to the actual angle, and the azimuth angle is converted into a corresponding radian value.

3. The method for adjusting the line and slope of a shield tunnel according to claim 1, characterized in that: The position of the first shield center point in the shield tunnel includes a straight line, a circular curve, a front gentle curve or a rear gentle curve.

4. The method for adjusting the line and slope of a shield tunnel according to claim 1, characterized in that: The first shield center point and the second shield center point are located in different planes of the shield tunnel.

5. A shield tunnel alignment and slope adjustment device, characterized in that: include: A first calculation module, used to obtain the coordinates of a first shield center point and the coordinates of a second shield center point adjacent to the first shield center point, so as to calculate the arc value between the first shield center point and the second shield center point; A second calculation module is used to obtain the actual offset between the tunnel centerline and the line centerline and the limit allowable error value of the plane, and calculate the plane envelope according to the actual offset, the limit allowable error value, the coordinates of the first shield center point and the arc value; The third calculation module is used to obtain the section mileage value of the longitudinal section, the actual top measuring point elevation, the actual bottom measuring point elevation, the minimum allowable height of the overhead line installation and the minimum allowable height of the track structure, and calculate the longitudinal section envelope line based on the obtained values; An adjustment module, used for adjusting the line and slope of the shield tunnel based on the plane envelope and the longitudinal section envelope; The second calculation module obtains the actual offset between the tunnel centerline and the line centerline and the limit allowable error value of the plane, and calculates the plane envelope according to the actual offset, the limit allowable error value, the coordinates of the first shield center point and the arc value, including: Obtaining a designed offset between the tunnel centerline and the line centerline, and calculating an actual offset between the tunnel centerline and the line centerline according to the designed offset and the position of the first shield center point in the shield tunnel; Obtaining the limit allowable error value of the plane, and calculating the envelope discrete point coordinates of the allowable limit error on the left and right sides of the center point of the first shield according to the limit allowable error value, the arc value, the actual offset, and the coordinates of the center point of the first shield; The third calculation module calculates the longitudinal section envelope line based on the above, including: Calculate the envelope discrete point coordinates of the allowable limit error of the top of the center point of the first shield according to the section mileage value of the longitudinal section, the actual top measurement point elevation and the minimum allowable height of the overhead line installation; The third calculation module calculates the longitudinal section envelope line based on the calculation, and further includes: The coordinates of the envelope discrete points of the allowable limit error at the bottom of the center point of the first shield are calculated according to the section mileage value of the longitudinal section, the actual bottom measuring point elevation and the allowable minimum height of the track structure.

6. An electronic device, characterized in that: It comprises a memory and a processor, wherein the memory is used to store one or more computer instructions, wherein the one or more computer instructions are executed by the processor to implement a shield tunnel alignment and slope adjustment method as described in any one of claims 1 to 4.

7. A computer-readable storage medium storing a computer program, characterized in that: The computer program enables a computer to implement a shield tunnel alignment and slope adjustment method as described in any one of claims 1 to 4 when executed.

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